Experimental Magnetohydrodynamic Energy Extraction from a Pulsed Detonation

Experimental Magnetohydrodynamic Energy Extraction from a Pulsed Detonation PDF Author: Kaz I. Teope
Publisher:
ISBN:
Category : Electric power production
Languages : en
Pages : 64

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"The high MWatt power available in a fuel-fed detonation wave, which contains combustion ions in the trailing gas, provides an opportunity for external power extraction via electromagnetically forced charged particle drift. Sets of experiments were accomplished using a pulsed detonation tube, extracting power across a load resistor in an electrical circuit with an applied electric or magnetic field to determine what magnitude of gas conductivity and power extraction could be attained from an unseeded or seeded pulsed detonation driven combustion. Due to the low magnetic field strength, even with flow seeding, the power extracted in this research was not enough for practical use, However, theoretical calculations with higher magnetic field strength and greater gas conductivity than was found in this research shoe promise for continued research. Future work would entail use of a stronger magnetic field to increase power extraction." -- author's abstract

Experimental Magnetohydrodynamic Energy Extraction from a Pulsed Detonation

Experimental Magnetohydrodynamic Energy Extraction from a Pulsed Detonation PDF Author: Kaz I. Teope
Publisher:
ISBN:
Category : Electric power production
Languages : en
Pages : 64

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Book Description
"The high MWatt power available in a fuel-fed detonation wave, which contains combustion ions in the trailing gas, provides an opportunity for external power extraction via electromagnetically forced charged particle drift. Sets of experiments were accomplished using a pulsed detonation tube, extracting power across a load resistor in an electrical circuit with an applied electric or magnetic field to determine what magnitude of gas conductivity and power extraction could be attained from an unseeded or seeded pulsed detonation driven combustion. Due to the low magnetic field strength, even with flow seeding, the power extracted in this research was not enough for practical use, However, theoretical calculations with higher magnetic field strength and greater gas conductivity than was found in this research shoe promise for continued research. Future work would entail use of a stronger magnetic field to increase power extraction." -- author's abstract

Integrated Pulse Detonation Propulsion and Magnetohydrodynamic Power

Integrated Pulse Detonation Propulsion and Magnetohydrodynamic Power PDF Author: National Aeronautics and Space Adm Nasa
Publisher: Independently Published
ISBN: 9781723915710
Category :
Languages : en
Pages : 60

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Book Description
The prospects for realizing an integrated pulse detonation propulsion and magnetohydrodynamic (MHD) power system are examined. First, energy requirements for direct detonation initiation of various fuel-oxygen and fuel-air mixtures are deduced from available experimental data and theoretical models. Second, the pumping power requirements for effective chamber scavenging are examined through the introduction of a scavenging ratio parameter and a scavenging efficiency parameter. A series of laboratory experiments were carried out to investigate the basic engineering performance characteristics of a pulse detonation-driven MHD electric power generator. In these experiments, stoichiometric oxy-acetylene mixtures seeded with a cesium hydroxide/methanol spray were detonated at atmospheric pressure in a 1-m-long tube having an i.d. of 2.54 cm. Experiments with a plasma diagnostic channel attached to the end of the tube confirmed the attainment of detonation conditions (p2/p1 approximately 34 and D approximately 2,400 m/sec) and enabled the direct measurement of current density and electrical conductivity (approximately = 6 S/m) behind the detonation wave front, In a second set of experiments, a 30-cm-long continuous electrode Faraday channel, having a height of 2.54 cm and a width of 2 cm, was attached to the end of the tube using an area transition duct. The Faraday channel was inserted in applied magnetic fields of 0.6 and 0.95 T, and the electrodes were connected to an active loading circuit to characterize power extraction dependence on load impedance while also simulating higher effective magnetic induction. The experiments indicated peak power extraction at a load impedance between 5 and 10 Omega. The measured power density was in reasonable agreement with a simple electrodynamic model incorporating a correction for near-electrode potential losses. The time-resolved thrust characteristics of the system were also measured, and it was found that the NM interaction exer

Pulse Detonation Rocket Magnetohydrodynamic Power Experiment

Pulse Detonation Rocket Magnetohydrodynamic Power Experiment PDF Author: R. J. Litchford
Publisher:
ISBN:
Category : Electromagnetism
Languages : en
Pages : 48

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Integrated Pulse Detonation Propulsion and Magnetohydrodynamic Power

Integrated Pulse Detonation Propulsion and Magnetohydrodynamic Power PDF Author: R. J. Litchford
Publisher:
ISBN:
Category :
Languages : en
Pages : 60

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MHD Power Extraction from a Pulse Detonation Engine

MHD Power Extraction from a Pulse Detonation Engine PDF Author: J.-L. Cambier
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Explosive Parameters for Magnetohydrodynamic Energy Conversion

Explosive Parameters for Magnetohydrodynamic Energy Conversion PDF Author: Marvin W. Burnham
Publisher:
ISBN:
Category :
Languages : en
Pages : 78

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The explosive charge parameters related to the efficiency and utility of explosive energy sources for pulsed magnetohydrodynamic energy conversion were investigated. Experimental measurements were made of theoretically signif icant charge geometry and composition parameters. Good agreement with theory was observed and exceptionally high plasma conductivity was measured. A cavity shape, (called the W cavity) tending to produce a tubular conductor, was conceived and charges designed with such a cav-had a power generation capability of over 300% higher than that of charges with con ventional cavities. (Author).

NASA Technical Memorandum

NASA Technical Memorandum PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 582

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NASA Technical Paper

NASA Technical Paper PDF Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 606

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Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1572

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Naval Research Reviews

Naval Research Reviews PDF Author:
Publisher:
ISBN:
Category : Naval research
Languages : en
Pages : 160

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